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US8808477B2 - Display unit and its manufacturing method - Google Patents

Display unit and its manufacturing method Download PDF

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Publication number
US8808477B2
US8808477B2 US11/689,140 US68914007A US8808477B2 US 8808477 B2 US8808477 B2 US 8808477B2 US 68914007 A US68914007 A US 68914007A US 8808477 B2 US8808477 B2 US 8808477B2
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Prior art keywords
touch panel
light emitting
display
panel
substrate
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US11/689,140
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US20070160777A1 (en
Inventor
Yuichi Iwase
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JDI Design and Development GK
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Sony Corp
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Priority to US11/689,140 priority Critical patent/US8808477B2/en
Application filed by Sony Corp filed Critical Sony Corp
Publication of US20070160777A1 publication Critical patent/US20070160777A1/en
Priority to US14/299,609 priority patent/US20140285738A1/en
Application granted granted Critical
Publication of US8808477B2 publication Critical patent/US8808477B2/en
Priority to US14/560,114 priority patent/US9720448B2/en
Assigned to JOLED INC. reassignment JOLED INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SONY CORPORATION
Priority to US15/612,718 priority patent/US10571965B2/en
Priority to US16/744,501 priority patent/US10817019B2/en
Priority to US17/020,817 priority patent/US11586244B2/en
Assigned to INCJ, LTD. reassignment INCJ, LTD. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Joled, Inc.
Assigned to Joled, Inc. reassignment Joled, Inc. CORRECTION BY AFFIDAVIT FILED AGAINST REEL/FRAME 063396/0671 Assignors: Joled, Inc.
Assigned to JDI DESIGN AND DEVELOPMENT G.K. reassignment JDI DESIGN AND DEVELOPMENT G.K. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Joled, Inc.
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1643—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being associated to a digitizer, e.g. laptops that can be used as penpads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G06F1/169—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes
    • G06F1/1692—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes the I/O peripheral being a secondary touch screen used as control interface, e.g. virtual buttons or sliders
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment

Definitions

  • the present invention relates to a display unit having a touch panel and its manufacturing method, and more particularly such a display unit using organic light emitting devices and its manufacturing method.
  • a so-called touch screen wherein a touch panel is mounted to a display panel using a CRT (Cathode Ray Tube) or a liquid crystal is widely used in banks, stations and the like. Additionally, a compact touch screen is adopted for a PDA (Personal Digital Assistant), a portable terminal and the like.
  • CTR Cathode Ray Tube
  • PDA Personal Digital Assistant
  • a general touch panel used for conventional touch screens is, for example, has a structure wherein a glass substrate and a plastic film are layered.
  • a glass substrate side is placed opposite to a display panel, so that a plastic film side becomes an operation face.
  • a void is provided between a glass substrate of the touch panel and the liquid crystal display panel.
  • a touch panel having a structure wherein two plastic films are layered (hereinafter referred to as “flexible touch panel”) has been developed, and this flexible touch panel is expected as what allows the PDA, the portable terminal and the like to become further thinner and lighter.
  • a flexible touch panel has no rigidity itself since it has no glass substrate, so that the flexible touch panel should be supported by bonding a display panel thereto. Therefore, there is a problem that the flexible touch panel cannot be provided with a void between itself and the display panel as in a touch screen of a conventional liquid crystal display panel, so that it is difficult to mount the flexible touch panel to the liquid crystal display panel.
  • the can sealing structure is a structure wherein an adhesive is applied to the rim part of a rear panel, a sealing can made of metals or glass is bonded thereto, and a getter material such as calcium is enclosed in a space between the rear panel and the sealing can.
  • a getter material such as calcium
  • a display unit comprises a display panel including a substrate wherein display devices are formed; and a touch panel which is directly bonded to the whole face of the display panel with an adhesive layer in between, and which detects contact with a finger or a pen.
  • a method of manufacturing the display unit according to the invention includes the steps of: forming the display panel including the substrate wherein the display devices are formed; and directly bonding a whole face of the touch panel which detects contact with a finger or a pen and the display panel together with the adhesive layer in between.
  • the whole faces of the touch panel and the display panel are directly bonded together with the adhesive layer in between. Therefore, there is no void between the touch panel and the display panel, so that a thickness of the display unit is reduced.
  • the display panel has a sealing substrate which is placed opposite to a display device side of the substrate, and the whole faces of the substrate and the sealing substrate are bonded together with the adhesive layer in between.
  • a suitable touch panel is, for example, a touch panel having a structure wherein two plastic films in which respective transparent electrodes are formed are layered so that the transparent electrodes are placed opposite to each other. The reason of it is that thickness and weight of the display unit is further reduced. Another reason of it is that even when the touch panel is such a touch panel with low rigidity, the touch panel is supported by the display panel, so that when distortion or bending is generated in the plastic film due to contact with a finger or a pen, such distortion or bending is restrained or recovered by the display panel.
  • a suitable display device is an organic light emitting device, which has an organic layer including a light emitting layer between a first electrode and a second electrode, and which extracts lights generated in the light emitting layer from the second electrode side.
  • the touch panel and the display panel are directly bonded without providing a void between the touch panel and the display panel since the organic light emitting device has no blooming phenomenon as in the liquid crystal. Therefore, by the structure of the invention, high image quality can be realized.
  • FIG. 1 is a cross sectional view showing a construction of a display unit according to a first embodiment of the invention
  • FIG. 2 is an enlarged cross sectional view showing a construction of an organic layer in organic light emitting devices illustrated in FIG. 1 ;
  • FIG. 3 is an enlarged cross sectional view showing a construction of an organic layer in an organic light emitting device illustrated in FIG. 1 ;
  • FIGS. 4A and 4B are cross sectional views showing a method of manufacturing the display unit illustrated in FIG. 1 in the order of processes;
  • FIG. 5 is a cross sectional view showing a process following FIGS. 4A and 4B ;
  • FIGS. 6A and 6B are explanation drawings showing a process following FIG. 5 ;
  • FIGS. 7A to 7C are explanation drawings showing a method of manufacturing a display unit according to a modification of the invention.
  • FIG. 8 is a cross sectional view showing a construction of a display unit according to a second embodiment of the invention.
  • FIGS. 9A and 9B are explanation drawings showing a method of manufacturing the display unit according to the modification of the invention.
  • FIG. 1 shows a cross sectional structure of a display unit according to a first embodiment of the invention.
  • This display unit is used as an ultrathin organic light emitting color display unit or the like, and, for example, a touch panel 20 is bonded to a whole face of a display panel 10 by an adhesive layer 30 .
  • a driving panel 40 and a sealing panel 50 are placed opposite, and whole faces of both the panels 40 and 50 are bonded by an adhesive layer 60 .
  • the driving panel 40 has a structure wherein, for example, an organic light emitting device 10 R which emits red lights, an organic light emitting device 10 G which emits green lights, and an organic light emitting device 10 B which emits blue lights are provided in order in a matrix state as a whole, on a driving substrate 11 made of an insulating material such as glass.
  • the driving substrate 11 is provided with a protective film (passivation film) 11 A to prevent moisture and the like from intruding into the organic light emitting devices 10 R, 10 G, and 10 B.
  • a first electrode 12 as an anode, an organic layer 13 , and a second electrode 14 as a cathode are layered in this order from the driving substrate 11 side.
  • the protective film 11 A is formed on the second electrode 14 .
  • the first electrode 12 also has a function as a reflection layer, and it is desirable that the first electrode 12 has a reflectance as high as possible in order to improve light emitting efficiency.
  • materials to make the first electrode 12 include simple substances or alloys of metal elements with high work function, such as platinum (Pt), gold (Au), silver (Ag), chromium (Cr), tungsten (W) and the like.
  • a thickness of the first electrode 12 in the layer direction (hereinafter simply referred to as “thickness”) is preferably from 100 nm to 300 nm.
  • AgPdCu alloy whose main component is silver, and which contains palladium (Pd) of 0.3 wt % to 1 wt % and copper (Cu) of 0.3 wt % to 1 wt % can be cited.
  • FIG. 2 shows an enlarged view of a construction of the organic layer 13 in the organic light emitting devices 10 R and 10 B.
  • the organic layer 13 of the organic light emitting devices 10 R and 10 B has a structure wherein an electron hole injection layer 13 A, an electron hole transport layer 13 B, a light emitting layer 13 C, an electron transport layer 13 D, and an electron injection layer 13 E are layered in this order from the first electrode 12 side.
  • a function of the electron hole injection layer 13 A and the electron hole transport layer 13 B is to improve efficiency to inject electron holes into the light emitting layer 13 C.
  • a function of the light emitting layer 13 C is to produce lights by current injection.
  • a function of the electron transport layer 13 D and the electron injection layer 13 E is to improve efficiency to inject electrons into the light emitting layer 13 C.
  • the electron hole injection layer 13 A of the organic light emitting device 10 R has a thickness of about 30 nm, and made of 4,4′, 4′′-tris (3-methylphenyl phenyl amino) tri-phenyl amine (MTDATA).
  • the electron hole transport layer 13 B of the organic light emitting device 10 R has a thickness of about 30 nm, and made of bis [(N-naphthyl)-N-phenyl] benzidine ( ⁇ -NPD).
  • the light emitting layer 13 C of the organic light emitting device 10 R has a thickness of about 50 nm, and made of 2,5-bis [4-[N-(4-methoxyphenyl)-N-phenylamino]] stilbenzene-1,4-dica-bonitrile (BSB).
  • the electron transport layer 13 D of the organic light emitting device 10 R has a thickness of about 30 nm, and made of 8-quinolinol aluminum complex (Alq).
  • the electron injection layer 13 E of the organic light emitting device 10 R for example, has a thickness of 1 nm, and made of lithium fluoride (LiF).
  • the electron hole injection layer 13 A of the organic light emitting device 10 B has a thickness of about 30 nm, and made of MTDATA.
  • the electron hole transport layer 13 B of the organic light emitting device 10 B has a thickness of about 30 nm, and made of ⁇ -NPD.
  • the light emitting layer 13 C of the organic light emitting device 10 B has a thickness of about 30 nm, and made of spiro 6 ⁇ .
  • the electron transport layer 13 D of the organic light emitting device 10 B for example, has a thickness of about 30 nm, and made of Alq.
  • the electron injection layer 13 E of the organic light emitting device 10 B has a thickness of about 1 nm, and made of lithium fluoride (LiF).
  • FIG. 3 shows an enlarged view of a construction of the organic layer 13 in the organic light emitting device 10 G.
  • the organic layer 13 of the organic light emitting device 10 G has a structure wherein the electron hole injection layer 13 A, the electron hole transport layer 13 B, the light emitting layer 13 C, and the electron injection layer 13 E are layered in this order from the first electrode 12 side.
  • the light emitting layer 13 C also has a function as an electron transport layer.
  • the electron hole injection layer 13 A of the organic light emitting device 10 G has a thickness of about 30 nm, and made of MTDATA.
  • the electron hole transport layer 13 B of the organic light emitting device 10 G has a thickness of about 30 nm, and made of ⁇ -NPD.
  • the light emitting layer 13 C of the organic light emitting device 10 G has a thickness of about 60 nm, and made of Alq.
  • the electron injection layer 13 E of the organic light emitting device 10 G for example, has a thickness of about 1 nm, and made of lithium fluoride (LiF).
  • the second electrode 14 also has a function as a semi-transparent reflection layer.
  • these organic light emitting devices 10 R, 10 G, and 10 B have a resonator structure wherein lights generated in the light emitting layer 13 C are resonated and extract from a second end P 2 , by regarding an end face of the first electrode 12 on the light emitting layer 13 C side as a first end P 1 , an end face of the second electrode 14 on the light emitting layer 13 C side as the second end P 2 , and the organic layer 13 as a resonance part.
  • Such a resonator structure is preferable, since the lights generated in the light emitting layer 13 C generate multiple interference, and act as a kind of narrow band filter, so that half bandwidth of spectrum of the extracted light is reduced, and color purity can be improved. Further, such a resonator structure is preferable, since outside lights entering from the sealing panel 50 can be attenuated by the multiple interference as well, and reflectance of outside lights in the organic light emitting devices 10 R, 10 G, and 10 B can be lowered extremely in combination with a color filter 52 described later (refer to FIG. 1 ).
  • an optical distance L between the first end P 1 and the second end P 2 of the resonator satisfies Mathematical Expression 1, and a resonance wave length of the resonator (peak wave length of the spectrum of the extracted light) corresponds to a peak wave length of spectrum of the light to be extracted.
  • L represents an optical distance between the first end P 1 and the second end P 2
  • ⁇ represents a phase shift (rad) of the reflection light generated in the first end P 1 and the second end P 2
  • ⁇ represents a peak wave length of spectrum of the light to be extracted from the second end P 2 side
  • m represents a whole number which makes L be a positive number.
  • L and ⁇ should share a common unit such as (nm).
  • the sealing panel 50 shown in FIG. 1 has a sealing substrate 51 which seals the organic light emitting devices 10 R, 10 G, and 10 B along with the adhesive layer 60 .
  • the sealing substrate 51 is made of a material such as glass which is transparent to the lights generated in the organic light emitting devices 10 R, 10 G, and 10 B.
  • the sealing substrate 51 is, for example, provided with the color filter 52 , extracts the lights generated in the organic light emitting devices 10 R, 10 G, and 10 B, absorbs outside lights reflected in the organic light emitting devices 10 R, 10 G, and 10 B and the wiring between them, and improves the contrast.
  • the color filter 52 can be arranged on either face of the sealing substrate 51 . However, it is preferable to arrange the color filter 52 on the driving panel 40 side. The reason of it is that the color filter 52 is not exposed on the surface and a structure wherein antiweatherability of the color filter 52 is considered can be obtained. Another reason of it is that when bonding the display panel 10 and the touch panel 20 , problems such as unevenness in the touch panel 20 can be prevented.
  • the color filter 52 has a red color filter 52 R, a green filter 52 G, and a blue filter 52 B, which are positioned corresponding to the organic light emitting devices 10 R, 10 G, and 10 B in this order.
  • the red color filter 52 R, the green filter 52 G, and the blue filter 52 B are, for example, respectively formed in the shape of rectangle with no space between them.
  • the red color filter 52 R, the green filter 52 G, and the blue filter 52 B are respectively made of a resin mixed with pigments, and adjusted so that light transmission in the targeted wave length band of red, green or blue becomes high and light transmission in other wave length band becomes low by selecting a pigment.
  • a wave length range with high light transmittance in the color filter 52 corresponds to a peak wave length ⁇ of spectrum of the light extracted from the resonator structure. Therefore, out of outside lights entering from the sealing panel 50 , only the light having a wave length equal to the peak wave length ⁇ of spectrum of the light to be extracted filters out through the color filter 52 , and other outside lights having other wave lengths are prevented from intruding into the organic light emitting devices 10 R, 10 G, and 10 B.
  • the protective film 11 A shown in FIG. 1 is made of, for example, silicon oxide (SiO 2 ), silicon nitride (SiN x ) and the like.
  • a function of the protective film 11 A is to prevent oxygen, moisture and the like from intruding into the organic light emitting devices 10 R, 10 G, and 10 B.
  • the touch panel 20 shown in FIG. 1 is a flexible touch panel which has a structure, for example, wherein a lower plastic film 21 and a touch-side plastic film 22 are layered with an unshown spacer in between, and located on the sealing substrate 51 on the side opposite to the driving substrate 11 .
  • the lower plastic film 21 is provided with a transparent electrode 21 A
  • the touch-side plastic film 22 is provided with a transparent electrode 22 A.
  • the lower plastic film 21 and the touch-side plastic film 22 are layered so that the transparent electrodes 21 A and 22 A are placed opposite.
  • the transparent electrodes 21 A and 22 A are connected to an unshown control system through an unshown flexible connector and the like.
  • This display unit can be, for example, produced as follows.
  • FIGS. 4A and 4B to 6 A and 6 B show a method of manufacturing this display unit in the order of processes.
  • the first electrode 12 made of the above-mentioned material is deposited in the foregoing thickness by, for example, DC sputtering, selective etching is made by using, for example, lithography technique, and patterning is made in the form of a given shape.
  • FIG. 4A On the driving substrate 11 made of the above-mentioned material, the first electrode 12 made of the above-mentioned material is deposited in the foregoing thickness by, for example, DC sputtering, selective etching is made by using, for example, lithography technique, and patterning is made in the form of a given shape.
  • the electron hole injection layer 13 A, the electron hole transport layer 13 B, the light emitting layer 13 C, the electron transport layer 13 D, the electron injection layer 13 E, and the second electrode 14 which have the foregoing thicknesses and are made of the foregoing materials, are sequentially deposited, for example, by deposition method, and the organic light emitting devices 10 R, 10 G, and 10 B as shown in FIGS. 2 and 3 are formed.
  • the protective film 11 A made of the above-mentioned material is formed to cover the organic light emitting devices 10 R, 10 G, and 10 B of the driving substrate 11 . Consequently, the driving panel 40 is formed.
  • the red filter 52 R is formed by, for example, on the sealing substrate 51 made of the foregoing material, a material for the red filter 52 R is applied by spin coat method, and burning is made with patterning by photolithography. Subsequently, as shown in FIG. 4B as well, the blue filter 52 B and the green filter 52 G are sequentially formed in the same manner as in the red filter 52 R. Consequently, the sealing panel 50 is formed.
  • the adhesive layer 60 is formed on the protective film 11 A, the sealing substrate 51 wherein the color film 52 is formed is placed opposite to the side of the organic light emitting devices 10 R, 10 G, and 10 B of the driving substrate 11 , and whole faces of the sealing substrate 51 and the driving substrate 11 are bonded with the adhesive layer 60 in between. Then, it is preferable that a side of the sealing panel 50 where the color filter 52 is formed is placed opposite to the driving panel 40 . Consequently, the display panel 10 is formed.
  • the adhesive layer 30 is formed on the display panel 10 , and the whole faces of the touch panel 20 and the display panel 10 are bonded with the adhesive layer 30 in between.
  • the touch panel 20 is attached to a touch panel holding plate 70 , and a roller 80 is applied onto one side of the touch panel 20 .
  • the touch panel 20 and the display panel 10 are bonded by pressure force generated by rotational movement of the roller 80 .
  • the touch panel 20 is slid on the touch panel holding plate 70 by moving the touch panel holding plate 70 in the direction of arrow A in sync with the roller 80 . Consequently, the touch panel 20 and the display panel 10 can be bonded together without mixing air bubbles into the adhesive layer 30 .
  • the display unit shown in FIGS. 1 to 3 is completed.
  • this display unit when a given voltage is applied between the first electrode 12 and the second electrode 14 , current is injected into the light emitting layer 13 C, and an electron hole and an electron recombines, leading to light emitting mainly at the interface of the light emitting layer 13 C.
  • This light multiple-reflects between the first electrode 12 and the second electrode 14 , and extracted through the second electrode 14 , the protective film 11 A, the color filter 52 , the sealing substrate 51 , and the touch panel 20 .
  • the touch panel 20 detects the contact.
  • the display panel 10 since the display panel 10 has a structure wherein the whole faces of the driving substrate 11 and the sealing substrate 51 are bonded together with the adhesive layer 60 in between, strength of the display panel 10 is raised. Therefore, this display unit is very suitable as a display unit for mobile devices wherein a touch screen is essential and which require high strength.
  • the touch panel 20 is a flexible touch panel having the structure, wherein the lower plastic film 21 formed with the transparent electrode 21 A and the touch-side plastic film 22 formed with the transparent electrode 22 A are layered so that the transparent electrodes 21 A and 22 A are placed opposite. Therefore, thickness and weight of the display unit can be further reduced. Further, even if the touch panel 20 is such a touch panel with low rigidity, since the touch panel 20 is supported by the display panel 10 , when distortion or bending is generated in the touch-side plastic film 22 and the like due to contact with a finger or a pen, such distortion or bending can be restrained or recovered by the display panel 10 .
  • the roller 80 is applied onto one side of the touch panel 20 and pressure force is applied by rotating and moving the roller 80 , the touch panel 20 and the display panel 10 can be bonded without mixing air bubbles into the adhesive layer 30 . Consequently, deterioration of the organic light emitting devices 10 R, 10 G, and 10 B due to oxygen or moisture of air bubbles can be prevented, and the image quality can be improved.
  • FIGS. 7A and 7B show modification of the method of manufacturing the display unit according to the first embodiment.
  • the touch panel 20 is previously incurved by setting the face bonded to the adhesive layer 30 to outside, and pressed by the roller 80 from the other face.
  • the display panel 10 is formed. Subsequently, as shown in FIG. 7A , the touch panel 20 is previously incurved in the shape of, for example, approximate U, by setting the lower plastic film 21 bonded to the adhesive layer 30 to outside and by using a roll (not shown) and the like.
  • the adhesive layer 30 is formed on the display panel 10 , one end 20 A of the touch panel 20 which is previously incurved in the shape of U is placed on the display panel 10 , and the roller 80 is applied to the one end 20 A. Then, the roller 80 is applied to the touch-side plastic film 22 of the touch panel 20 .
  • the touch panel 20 and the display panel 10 are bonded together by pressing the touch panel 20 by the roller 80 from the touch-side plastic film 22 side by rolling and moving the roller 80 .
  • force is applied in the direction of tension to make the touch-side plastic film 22 flat. Therefore, in bonding and operation, no distortion or bending is generated in the touch-side plastic film 22 .
  • the display unit shown in FIGS. 1 to 3 is completed.
  • FIG. 8 shows a cross sectional structure of a display unit according to a second embodiment of the invention.
  • This display unit is identical with the display unit described in the first embodiment except that the display panel 10 is not provided with the sealing panel 50 and the adhesive layer 60 , but is comprised of only the driving panel 40 . Therefore, the same components are applied with the same symbols, and their detailed explanations are omitted.
  • the touch panel 20 is bonded on the whole face on the side where the organic light emitting devices 10 R, 10 G, and 10 B of the driving substrate 11 are formed with the adhesive layer 30 in between.
  • the light emitting devices 10 R, 10 G, and 10 B are sealed by the touch panel 20 . Therefore, since the sealing panel 50 (refer to FIG. 1 ) and the adhesive layer 60 are omitted, thickness and weight of the display unit can be further reduced. Additionally, since the organic light emitting devices 10 R, 10 G, and 10 B are surely sealed by the protective film 11 A, the adhesive layer 30 , and the touch panel 20 , deterioration due to intrusion of moisture or oxygen can be prevented.
  • a method of manufacturing the display unit in this embodiment is similar to that in the first embodiment except that the touch panel 20 and the display panel 10 are bonded together by forming the adhesive layer 30 on the protective film 11 A. Its function is similar to that in the first embodiment.
  • the sealing panel 50 is not provided, and the organic light emitting devices 10 R, 10 G, and 10 B are sealed by the touch panel 20 , thickness and weight of the display unit can be further reduced. Additionally, since the organic light emitting devices 10 R, 10 G, and 10 B are surely sealed by the protective film 11 A, the adhesive layer 30 , and the touch panel 20 , deterioration due to intrusion of moisture or oxygen can be prevented.
  • the touch panel 20 is attached to the touch panel holding plate 70 .
  • the touch panel 20 is attached to a mesh 92 which is stretched between frames 91 , and pressed by the roller 80 through the mesh 92 . This method is preferable since an angle of bend of the touch panel 20 is small so that a load to the touch panel 20 becomes small.
  • the case using the touch panel 20 having the structure wherein the lower plastic film 21 and the touch-side plastic film 22 are layered has been described.
  • the sealing panel 50 is omitted as above, the conventional touch panel using a glass substrate instead of the lower plastic film 21 can be used in order to improve strength of the display unit.
  • various driving methods can be used, such as resistance film method, capacitance method, optical method, ultrasonic method, and electromagnetic induction method.
  • the organic light emitting devices 10 R, 10 G, and 10 B their layer order can be opposite to that in the foregoing embodiments in such a way that the second electrode 14 , the organic layer 13 , and the first electrode 12 are layered on the driving substrate 11 in this order from the driving substrate 11 , and lights can be extracted from the driving substrate 11 side.
  • the touch panel 20 is placed on the driving substrate 11 on the side opposite to the organic light emitting devices 10 R, 10 G, and 10 B.
  • the case using the first electrode 12 as an anode and the second electrode 14 as a cathode has been described.
  • anode and cathode are reversed in such a way that the first electrode 12 is a cathode and the second electrode 14 is an anode.
  • the second electrode 14 , the organic layer 13 , and the first electrode 12 are layered on the driving substrate 11 in this order from the driving substrate 11 side, and the lights are extracted from the driving substrate 11 side.
  • the structures of the organic light emitting devices have been specifically described. However, all layers are not necessarily provided, and other layer can be further provided.
  • the first electrode 12 has a two-layer structure wherein a transparent conductive film is layered on the top of a reflection film such as a dielectric multi-layer film or Al.
  • a reflection film such as a dielectric multi-layer film or Al.
  • an end face of the reflection film on the light emitting layer side composes an end of the resonation part
  • the transparent conductive film composes a part of the resonation part.
  • the second electrode 14 is comprised of the semi-transparent reflection layer.
  • the second electrode 14 has a structure wherein the semi-transparent reflection layer and a transparent electrode are layered from the first electrode 12 side.
  • a function of this transparent electrode is to lower electric resistance of the semi-transparent reflection layer.
  • This transparent electrode is made of a conductive material having a sufficient translucency to the lights generated in the light emitting layer.
  • a material to make the transparent electrode for example, ITO or a compound containing indium, zinc (Zn), and oxygen is preferable, since good conductivity can be obtained by using these materials even if deposition is made at room temperature.
  • a thickness of the transparent electrode can be, for example, 30 nm to 1,000 nm.
  • the organic light emitting devices 10 R, 10 G, and 10 B are formed on the driving substrate 11 .
  • this invention can be applied to a display wherein other display devices such as an inorganic electroluminescence device is formed on the driving substrate 11 , FED (Field Emission Display), or a paper-like display which has been noted lately.
  • the whole faces of the touch panel and the display panel are directly bonded together with the adhesive layer in between, a void between the touch panel and the display panel can be omitted and a thickness of the display unit can be reduced.
  • the display panel since the display panel has the sealing substrate which is placed opposite to the display device side of the substrate, and the whole faces of the substrate and the sealing substrate are bonded together with the adhesive layer in between, strength of the display panel is improved. Therefore, this display unit is extremely suitable as a display unit for mobile devices wherein a touch screen is essential and which require high strength.
  • the touch panel has a structure wherein two plastic films wherein respective transparent electrodes are formed are layered so that these transparent electrodes are placed opposite to each other, thickness and weight of the display unit is further reduced.
  • the touch panel is such a touch panel with low rigidity, the touch panel is supported by the display panel.
  • the touch panel is provided on the side where the display devices of the substrate are formed, and the display devices are sealed by the touch panel, thickness and weight of the display unit can be further reduced.
  • the display devices are surely sealed by the adhesive layer and the touch panel, deterioration can be prevented.
  • the touch panel and the display panel are bonded together with the adhesive layer in between, one side of the touch panel is applied to the roller, and pressure force is applied by rotational movement of the roller, the touch panel and the display panel can be bonded together without mixing air bubbles into the adhesive layer. Therefore, deterioration of the display devices due to oxygen or moisture of air bubbles can be prevented, and image quality can be improved.
  • the touch panel since when the touch panel is pressed by the roller, the touch panel is previously incurved by setting the face bonded to the adhesive layer to outside, and the touch panel is pressed by the roller from the other face, i.e. the side to which contact by a finger or a pen is made, force is applied in the direction of tension to make the face to which contact by a finger or a pen is made flat. Therefore, in bonding, no distortion or bending is generated in the face to which contact by a finger or a pen is made, and image quality is improved.

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Abstract

The invention provides a display unit which can realize reduction in thickness and weight of the display unit by omitting a void between a touch panel and a display panel, and its manufacturing method. Whole faces of the touch panel and the display panel are directly bonded together with an adhesive layer in between. The display panel has a structure wherein a driving substrate in which organic light emitting devices are formed and a sealing substrate are bonded together with an adhesive layer in between. The touch panel has a structure wherein a lower plastic film in which a transparent electrode is formed and a touch-side plastic film in which a transparent electrode is formed are layered so that the transparent electrodes are placed opposite. The display panel is constructed with only the driving substrate, and the organic light emitting devices are sealed by the touch panel instead of the sealing substrate. Therefore, thickness and weight of the display unit can be further reduced.

Description

RELATED APPLICATION DATA
This application is a divisional of U.S. patent application Ser. No. 10/674,255, filed Sep. 29, 2003, now U.S Pat. No. 7,936,338 the entirety of which is incorporated herein by reference to the extent permitted by law. The present invention claims priority to Japanese Patent Application No. 2002-288803 filed in the Japanese Patent Office on Oct. 1, 2002, the entirety of which also is incorporated by reference herein to the extent permitted by law.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a display unit having a touch panel and its manufacturing method, and more particularly such a display unit using organic light emitting devices and its manufacturing method.
2. Description of the Related Art
A so-called touch screen, wherein a touch panel is mounted to a display panel using a CRT (Cathode Ray Tube) or a liquid crystal is widely used in banks, stations and the like. Additionally, a compact touch screen is adopted for a PDA (Personal Digital Assistant), a portable terminal and the like.
A general touch panel used for conventional touch screens is, for example, has a structure wherein a glass substrate and a plastic film are layered. In such a touch panel, a glass substrate side is placed opposite to a display panel, so that a plastic film side becomes an operation face. In the case of a liquid crystal display panel, in order to prevent blooming phenomenon that images are distorted since the liquid crystal is transformed by getting pressure from touch panel operations, a void is provided between a glass substrate of the touch panel and the liquid crystal display panel.
Lately, a touch panel having a structure wherein two plastic films are layered (hereinafter referred to as “flexible touch panel”) has been developed, and this flexible touch panel is expected as what allows the PDA, the portable terminal and the like to become further thinner and lighter. However, such a flexible touch panel has no rigidity itself since it has no glass substrate, so that the flexible touch panel should be supported by bonding a display panel thereto. Therefore, there is a problem that the flexible touch panel cannot be provided with a void between itself and the display panel as in a touch screen of a conventional liquid crystal display panel, so that it is difficult to mount the flexible touch panel to the liquid crystal display panel.
To resolve the above problem, it is thinkable that a void is secured in the central part by fixing only four sides of the flexible touch panel on the display panel. In the case of taking such a measure for the conventional touch panel, when the plastic film is distorted or bent due to contact with a finger or a pen, distortion or bending can be restrained or recovered by the glass substrate. However, in the case of taking such a measure for the flexible touch panel, there is a problem that such distortion or bending cannot be restrained or recovered, and image quality may be lowered due to distortion or bending of the plastic film.
Meanwhile, it is thinkable to construct a touch screen by bonding the flexible touch panel to an organic light emitting display, instead of the liquid crystal display. However, so far, there has been a problem that there is no established technique by which the flexible touch panel can be bonded to a whole face of the organic light emitting display without distortion or bending of the plastic film.
Further, in a conventional organic light emitting display, a so-called can sealing structure is generally adopted. The can sealing structure is a structure wherein an adhesive is applied to the rim part of a rear panel, a sealing can made of metals or glass is bonded thereto, and a getter material such as calcium is enclosed in a space between the rear panel and the sealing can. In such an organic light emitting display having the can sealing structure, there is a problem that application to a touch screen of mobile devices particularly requiring high strength is difficult, since reducing thickness is limited and only four sides of the panel is fixed on the sealing can.
SUMMARY OF THE INVENTION
In light of the foregoing, it is a first object of the invention to provide a display unit which can realize reduction of its thickness and weight by omitting a void between a touch panel and a display panel, and its manufacturing method.
It is another object of the invention to provide a display unit which can improve image quality by preventing distortion or bending of the touch panel, and its manufacturing method.
A display unit according to the invention comprises a display panel including a substrate wherein display devices are formed; and a touch panel which is directly bonded to the whole face of the display panel with an adhesive layer in between, and which detects contact with a finger or a pen.
A method of manufacturing the display unit according to the invention includes the steps of: forming the display panel including the substrate wherein the display devices are formed; and directly bonding a whole face of the touch panel which detects contact with a finger or a pen and the display panel together with the adhesive layer in between.
In the display unit and its manufacturing method according to the invention, the whole faces of the touch panel and the display panel are directly bonded together with the adhesive layer in between. Therefore, there is no void between the touch panel and the display panel, so that a thickness of the display unit is reduced.
Here, it is preferable that the display panel has a sealing substrate which is placed opposite to a display device side of the substrate, and the whole faces of the substrate and the sealing substrate are bonded together with the adhesive layer in between. By doing this, strength of the display panel becomes high, leading to obtaining a display unit suitable for mobile devices, wherein a touch screen is essential and which requires high strength.
A suitable touch panel is, for example, a touch panel having a structure wherein two plastic films in which respective transparent electrodes are formed are layered so that the transparent electrodes are placed opposite to each other. The reason of it is that thickness and weight of the display unit is further reduced. Another reason of it is that even when the touch panel is such a touch panel with low rigidity, the touch panel is supported by the display panel, so that when distortion or bending is generated in the plastic film due to contact with a finger or a pen, such distortion or bending is restrained or recovered by the display panel.
Further, a suitable display device is an organic light emitting device, which has an organic layer including a light emitting layer between a first electrode and a second electrode, and which extracts lights generated in the light emitting layer from the second electrode side. In the structure of the invention, the touch panel and the display panel are directly bonded without providing a void between the touch panel and the display panel since the organic light emitting device has no blooming phenomenon as in the liquid crystal. Therefore, by the structure of the invention, high image quality can be realized.
Other and further objects, features and advantages of the invention will appear more fully from the following description.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a cross sectional view showing a construction of a display unit according to a first embodiment of the invention;
FIG. 2 is an enlarged cross sectional view showing a construction of an organic layer in organic light emitting devices illustrated in FIG. 1;
FIG. 3 is an enlarged cross sectional view showing a construction of an organic layer in an organic light emitting device illustrated in FIG. 1;
FIGS. 4A and 4B are cross sectional views showing a method of manufacturing the display unit illustrated in FIG. 1 in the order of processes;
FIG. 5 is a cross sectional view showing a process following FIGS. 4A and 4B;
FIGS. 6A and 6B are explanation drawings showing a process following FIG. 5;
FIGS. 7A to 7C are explanation drawings showing a method of manufacturing a display unit according to a modification of the invention;
FIG. 8 is a cross sectional view showing a construction of a display unit according to a second embodiment of the invention; and
FIGS. 9A and 9B are explanation drawings showing a method of manufacturing the display unit according to the modification of the invention.
 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Embodiments of the invention will be described in detail hereinbelow with reference to the drawings.
[First Embodiment]
FIG. 1 shows a cross sectional structure of a display unit according to a first embodiment of the invention. This display unit is used as an ultrathin organic light emitting color display unit or the like, and, for example, a touch panel 20 is bonded to a whole face of a display panel 10 by an adhesive layer 30.
In the display panel 10, for example, a driving panel 40 and a sealing panel 50 are placed opposite, and whole faces of both the panels 40 and 50 are bonded by an adhesive layer 60.
The driving panel 40 has a structure wherein, for example, an organic light emitting device 10R which emits red lights, an organic light emitting device 10G which emits green lights, and an organic light emitting device 10B which emits blue lights are provided in order in a matrix state as a whole, on a driving substrate 11 made of an insulating material such as glass. In addition, the driving substrate 11 is provided with a protective film (passivation film) 11A to prevent moisture and the like from intruding into the organic light emitting devices 10R, 10G, and 10B.
In the organic light emitting devices 10R, 10G, and 10B, for example, a first electrode 12 as an anode, an organic layer 13, and a second electrode 14 as a cathode are layered in this order from the driving substrate 11 side. On the second electrode 14, the protective film 11A is formed.
The first electrode 12 also has a function as a reflection layer, and it is desirable that the first electrode 12 has a reflectance as high as possible in order to improve light emitting efficiency. For example, materials to make the first electrode 12 include simple substances or alloys of metal elements with high work function, such as platinum (Pt), gold (Au), silver (Ag), chromium (Cr), tungsten (W) and the like. A thickness of the first electrode 12 in the layer direction (hereinafter simply referred to as “thickness”) is preferably from 100 nm to 300 nm. As an alloy material, for example, AgPdCu alloy, whose main component is silver, and which contains palladium (Pd) of 0.3 wt % to 1 wt % and copper (Cu) of 0.3 wt % to 1 wt % can be cited.
A construction of the organic layer 13 varies according to light emitting colors of the organic light emitting device 10. FIG. 2 shows an enlarged view of a construction of the organic layer 13 in the organic light emitting devices 10R and 10B. The organic layer 13 of the organic light emitting devices 10R and 10B has a structure wherein an electron hole injection layer 13A, an electron hole transport layer 13B, a light emitting layer 13C, an electron transport layer 13D, and an electron injection layer 13E are layered in this order from the first electrode 12 side. A function of the electron hole injection layer 13A and the electron hole transport layer 13B is to improve efficiency to inject electron holes into the light emitting layer 13C. A function of the light emitting layer 13C is to produce lights by current injection. A function of the electron transport layer 13D and the electron injection layer 13E is to improve efficiency to inject electrons into the light emitting layer 13C.
The electron hole injection layer 13A of the organic light emitting device 10R, for example, has a thickness of about 30 nm, and made of 4,4′, 4″-tris (3-methylphenyl phenyl amino) tri-phenyl amine (MTDATA). The electron hole transport layer 13B of the organic light emitting device 10R, for example, has a thickness of about 30 nm, and made of bis [(N-naphthyl)-N-phenyl] benzidine (α-NPD). The light emitting layer 13C of the organic light emitting device 10R, for example, has a thickness of about 50 nm, and made of 2,5-bis [4-[N-(4-methoxyphenyl)-N-phenylamino]] stilbenzene-1,4-dica-bonitrile (BSB). The electron transport layer 13D of the organic light emitting device 10R, for example, has a thickness of about 30 nm, and made of 8-quinolinol aluminum complex (Alq). The electron injection layer 13E of the organic light emitting device 10R, for example, has a thickness of 1 nm, and made of lithium fluoride (LiF).
The electron hole injection layer 13A of the organic light emitting device 10B, for example, has a thickness of about 30 nm, and made of MTDATA. The electron hole transport layer 13B of the organic light emitting device 10B, for example, has a thickness of about 30 nm, and made of α-NPD. The light emitting layer 13C of the organic light emitting device 10B, for example, has a thickness of about 30 nm, and made of spiro 6 Φ. The electron transport layer 13D of the organic light emitting device 10B, for example, has a thickness of about 30 nm, and made of Alq. The electron injection layer 13E of the organic light emitting device 10B, for example, has a thickness of about 1 nm, and made of lithium fluoride (LiF).
FIG. 3 shows an enlarged view of a construction of the organic layer 13 in the organic light emitting device 10G. The organic layer 13 of the organic light emitting device 10G has a structure wherein the electron hole injection layer 13A, the electron hole transport layer 13B, the light emitting layer 13C, and the electron injection layer 13E are layered in this order from the first electrode 12 side. The light emitting layer 13C also has a function as an electron transport layer.
The electron hole injection layer 13A of the organic light emitting device 10G, for example, has a thickness of about 30 nm, and made of MTDATA. The electron hole transport layer 13B of the organic light emitting device 10G, for example, has a thickness of about 30 nm, and made of α-NPD. The light emitting layer 13C of the organic light emitting device 10G, for example, has a thickness of about 60 nm, and made of Alq. The electron injection layer 13E of the organic light emitting device 10G, for example, has a thickness of about 1 nm, and made of lithium fluoride (LiF).
The second electrode 14 shown in FIGS. 1 to 3, for example, has a thickness of 1 nm to 50 nm, and made of a simple substance or an alloy of metal elements with low work function, such as aluminum (Al), magnesium (Mg), calcium (Ca), sodium (Na) and the like. Specially, an alloy made of magnesium and silver (MgAg alloy) is preferable, and a mass ratio of magnesium and silver is preferably Mg:Ag=5:1 to 20:1.
The second electrode 14 also has a function as a semi-transparent reflection layer. Namely, these organic light emitting devices 10R, 10G, and 10B have a resonator structure wherein lights generated in the light emitting layer 13C are resonated and extract from a second end P2, by regarding an end face of the first electrode 12 on the light emitting layer 13C side as a first end P1, an end face of the second electrode 14 on the light emitting layer 13C side as the second end P2, and the organic layer 13 as a resonance part. Such a resonator structure is preferable, since the lights generated in the light emitting layer 13C generate multiple interference, and act as a kind of narrow band filter, so that half bandwidth of spectrum of the extracted light is reduced, and color purity can be improved. Further, such a resonator structure is preferable, since outside lights entering from the sealing panel 50 can be attenuated by the multiple interference as well, and reflectance of outside lights in the organic light emitting devices 10R, 10G, and 10B can be lowered extremely in combination with a color filter 52 described later (refer to FIG. 1).
To obtain the above effects, it is preferable that an optical distance L between the first end P1 and the second end P2 of the resonator satisfies Mathematical Expression 1, and a resonance wave length of the resonator (peak wave length of the spectrum of the extracted light) corresponds to a peak wave length of spectrum of the light to be extracted. Actually, it is preferable that the optical distance L is selected so that L becomes a positive minimum value which satisfies the Mathematical Expression 1.
(2L)/λ+Φ/(2π)=m  [Mathematical Expression 1]
(In the mathematical expression, L represents an optical distance between the first end P1 and the second end P2, Φ represents a phase shift (rad) of the reflection light generated in the first end P1 and the second end P2, λ represents a peak wave length of spectrum of the light to be extracted from the second end P2 side, and m represents a whole number which makes L be a positive number. In the Mathematical Expression 1, L and λ should share a common unit such as (nm).)
The sealing panel 50 shown in FIG. 1 has a sealing substrate 51 which seals the organic light emitting devices 10R, 10G, and 10B along with the adhesive layer 60. The sealing substrate 51 is made of a material such as glass which is transparent to the lights generated in the organic light emitting devices 10R, 10G, and 10B. The sealing substrate 51 is, for example, provided with the color filter 52, extracts the lights generated in the organic light emitting devices 10R, 10G, and 10B, absorbs outside lights reflected in the organic light emitting devices 10R, 10G, and 10B and the wiring between them, and improves the contrast.
The color filter 52 can be arranged on either face of the sealing substrate 51. However, it is preferable to arrange the color filter 52 on the driving panel 40 side. The reason of it is that the color filter 52 is not exposed on the surface and a structure wherein antiweatherability of the color filter 52 is considered can be obtained. Another reason of it is that when bonding the display panel 10 and the touch panel 20, problems such as unevenness in the touch panel 20 can be prevented. The color filter 52 has a red color filter 52R, a green filter 52G, and a blue filter 52B, which are positioned corresponding to the organic light emitting devices 10R, 10G, and 10B in this order.
The red color filter 52R, the green filter 52G, and the blue filter 52B are, for example, respectively formed in the shape of rectangle with no space between them. The red color filter 52R, the green filter 52G, and the blue filter 52B are respectively made of a resin mixed with pigments, and adjusted so that light transmission in the targeted wave length band of red, green or blue becomes high and light transmission in other wave length band becomes low by selecting a pigment.
Further, a wave length range with high light transmittance in the color filter 52 corresponds to a peak wave length λ of spectrum of the light extracted from the resonator structure. Therefore, out of outside lights entering from the sealing panel 50, only the light having a wave length equal to the peak wave length λ of spectrum of the light to be extracted filters out through the color filter 52, and other outside lights having other wave lengths are prevented from intruding into the organic light emitting devices 10R, 10G, and 10B.
The protective film 11A shown in FIG. 1 is made of, for example, silicon oxide (SiO2), silicon nitride (SiNx) and the like. A function of the protective film 11A is to prevent oxygen, moisture and the like from intruding into the organic light emitting devices 10R, 10G, and 10B.
The touch panel 20 shown in FIG. 1 is a flexible touch panel which has a structure, for example, wherein a lower plastic film 21 and a touch-side plastic film 22 are layered with an unshown spacer in between, and located on the sealing substrate 51 on the side opposite to the driving substrate 11. In order to detect contact to the touch-side plastic film 22 by a finger, a pen or the like, in this touch panel 20, for example, the lower plastic film 21 is provided with a transparent electrode 21A, and the touch-side plastic film 22 is provided with a transparent electrode 22A. The lower plastic film 21 and the touch-side plastic film 22 are layered so that the transparent electrodes 21A and 22A are placed opposite. The transparent electrodes 21A and 22A are connected to an unshown control system through an unshown flexible connector and the like.
This display unit can be, for example, produced as follows.
FIGS. 4A and 4B to 6A and 6B show a method of manufacturing this display unit in the order of processes. First, as shown in FIG. 4A, on the driving substrate 11 made of the above-mentioned material, the first electrode 12 made of the above-mentioned material is deposited in the foregoing thickness by, for example, DC sputtering, selective etching is made by using, for example, lithography technique, and patterning is made in the form of a given shape. After that, as shown in FIG. 4A, the electron hole injection layer 13A, the electron hole transport layer 13B, the light emitting layer 13C, the electron transport layer 13D, the electron injection layer 13E, and the second electrode 14 which have the foregoing thicknesses and are made of the foregoing materials, are sequentially deposited, for example, by deposition method, and the organic light emitting devices 10R, 10G, and 10B as shown in FIGS. 2 and 3 are formed. After that, as shown in FIG. 4A as well, the protective film 11A made of the above-mentioned material is formed to cover the organic light emitting devices 10R, 10G, and 10B of the driving substrate 11. Consequently, the driving panel 40 is formed.
As shown in FIG. 4B, the red filter 52R is formed by, for example, on the sealing substrate 51 made of the foregoing material, a material for the red filter 52R is applied by spin coat method, and burning is made with patterning by photolithography. Subsequently, as shown in FIG. 4B as well, the blue filter 52B and the green filter 52G are sequentially formed in the same manner as in the red filter 52R. Consequently, the sealing panel 50 is formed.
Subsequently, as shown in FIG. 5, the adhesive layer 60 is formed on the protective film 11A, the sealing substrate 51 wherein the color film 52 is formed is placed opposite to the side of the organic light emitting devices 10R, 10G, and 10B of the driving substrate 11, and whole faces of the sealing substrate 51 and the driving substrate 11 are bonded with the adhesive layer 60 in between. Then, it is preferable that a side of the sealing panel 50 where the color filter 52 is formed is placed opposite to the driving panel 40. Consequently, the display panel 10 is formed.
After that, as shown in FIGS. 6A and 6B, the adhesive layer 30 is formed on the display panel 10, and the whole faces of the touch panel 20 and the display panel 10 are bonded with the adhesive layer 30 in between. Then, first, as shown in FIG. 6A, the touch panel 20 is attached to a touch panel holding plate 70, and a roller 80 is applied onto one side of the touch panel 20. Subsequently, as shown in FIG. 6B, the touch panel 20 and the display panel 10 are bonded by pressure force generated by rotational movement of the roller 80. Then, the touch panel 20 is slid on the touch panel holding plate 70 by moving the touch panel holding plate 70 in the direction of arrow A in sync with the roller 80. Consequently, the touch panel 20 and the display panel 10 can be bonded together without mixing air bubbles into the adhesive layer 30. As above, the display unit shown in FIGS. 1 to 3 is completed.
In this display unit, when a given voltage is applied between the first electrode 12 and the second electrode 14, current is injected into the light emitting layer 13C, and an electron hole and an electron recombines, leading to light emitting mainly at the interface of the light emitting layer 13C. This light multiple-reflects between the first electrode 12 and the second electrode 14, and extracted through the second electrode 14, the protective film 11A, the color filter 52, the sealing substrate 51, and the touch panel 20. When a finger or a pen contacts the touch-side plastic film 22, the touch panel 20 detects the contact. Then, in this embodiment, since the whole faces of the touch panel 20 and the display panel 10 are directly bonded together with the adhesive layer 30 in between so that the touch panel 20 is supported by the display panel 10, even when a finger or a pen contacts the touch panel 20, no distortion or bending is generated in the touch panel 20, and image quality is improved.
As above, according to this embodiment, since the whole faces of the touch panel 20 and the display panel 10 are directly bonded with the adhesive layer 30 in between, a void between the touch panel 20 and the display panel 10 is omitted, and a thickness of the display unit can be reduced.
In particular, since the display panel 10 has a structure wherein the whole faces of the driving substrate 11 and the sealing substrate 51 are bonded together with the adhesive layer 60 in between, strength of the display panel 10 is raised. Therefore, this display unit is very suitable as a display unit for mobile devices wherein a touch screen is essential and which require high strength.
Further, the touch panel 20 is a flexible touch panel having the structure, wherein the lower plastic film 21 formed with the transparent electrode 21A and the touch-side plastic film 22 formed with the transparent electrode 22A are layered so that the transparent electrodes 21A and 22A are placed opposite. Therefore, thickness and weight of the display unit can be further reduced. Further, even if the touch panel 20 is such a touch panel with low rigidity, since the touch panel 20 is supported by the display panel 10, when distortion or bending is generated in the touch-side plastic film 22 and the like due to contact with a finger or a pen, such distortion or bending can be restrained or recovered by the display panel 10.
In addition, particularly, since when the touch panel 20 and the display panel 10 are bonded together with the adhesive layer 30 in between, the roller 80 is applied onto one side of the touch panel 20 and pressure force is applied by rotating and moving the roller 80, the touch panel 20 and the display panel 10 can be bonded without mixing air bubbles into the adhesive layer 30. Consequently, deterioration of the organic light emitting devices 10R, 10G, and 10B due to oxygen or moisture of air bubbles can be prevented, and the image quality can be improved.
[Modification]
FIGS. 7A and 7B show modification of the method of manufacturing the display unit according to the first embodiment. In this modification, the touch panel 20 is previously incurved by setting the face bonded to the adhesive layer 30 to outside, and pressed by the roller 80 from the other face.
First, in the same manner as in what shown in FIGS. 4A, 4B and 5 in the first embodiment, the display panel 10 is formed. Subsequently, as shown in FIG. 7A, the touch panel 20 is previously incurved in the shape of, for example, approximate U, by setting the lower plastic film 21 bonded to the adhesive layer 30 to outside and by using a roll (not shown) and the like.
Next, as shown in FIG. 7B, the adhesive layer 30 is formed on the display panel 10, one end 20A of the touch panel 20 which is previously incurved in the shape of U is placed on the display panel 10, and the roller 80 is applied to the one end 20A. Then, the roller 80 is applied to the touch-side plastic film 22 of the touch panel 20.
Subsequently, as shown in FIG. 7C, the touch panel 20 and the display panel 10 are bonded together by pressing the touch panel 20 by the roller 80 from the touch-side plastic film 22 side by rolling and moving the roller 80. In this way, force is applied in the direction of tension to make the touch-side plastic film 22 flat. Therefore, in bonding and operation, no distortion or bending is generated in the touch-side plastic film 22. As above, the display unit shown in FIGS. 1 to 3 is completed.
As above, in this modification, since the touch panel 20 is previously incurved by setting the lower plastic film 21 bonded to the adhesive layer 30 to outside, and the touch panel 20 and the display panel 10 are bonded by pressing the touch panel 20 by the roller 80 from the touch-side plastic film 22 side, force is applied in the direction of tension to make the touch-side plastic film 22 of the touch panel 20 flat. Therefore, in bonding and operation, no distortion or bending is generated in the touch-side plastic film 22, and image quality is improved.
[Second Embodiment]
FIG. 8 shows a cross sectional structure of a display unit according to a second embodiment of the invention. This display unit is identical with the display unit described in the first embodiment except that the display panel 10 is not provided with the sealing panel 50 and the adhesive layer 60, but is comprised of only the driving panel 40. Therefore, the same components are applied with the same symbols, and their detailed explanations are omitted.
The touch panel 20 is bonded on the whole face on the side where the organic light emitting devices 10R, 10G, and 10B of the driving substrate 11 are formed with the adhesive layer 30 in between. The light emitting devices 10R, 10G, and 10B are sealed by the touch panel 20. Therefore, since the sealing panel 50 (refer to FIG. 1) and the adhesive layer 60 are omitted, thickness and weight of the display unit can be further reduced. Additionally, since the organic light emitting devices 10R, 10G, and 10B are surely sealed by the protective film 11A, the adhesive layer 30, and the touch panel 20, deterioration due to intrusion of moisture or oxygen can be prevented.
A method of manufacturing the display unit in this embodiment is similar to that in the first embodiment except that the touch panel 20 and the display panel 10 are bonded together by forming the adhesive layer 30 on the protective film 11A. Its function is similar to that in the first embodiment.
As above, in this embodiment, since the sealing panel 50 is not provided, and the organic light emitting devices 10R, 10G, and 10B are sealed by the touch panel 20, thickness and weight of the display unit can be further reduced. Additionally, since the organic light emitting devices 10R, 10G, and 10B are surely sealed by the protective film 11A, the adhesive layer 30, and the touch panel 20, deterioration due to intrusion of moisture or oxygen can be prevented.
While the invention has been described with reference to the embodiments, the invention is not limited to the foregoing embodiments, and various modifications may be made. For example, materials, thickness, deposition methods, and deposition conditions for respective layers are not limited to those described in the foregoing embodiments, and other materials, thickness, deposition methods, and deposition conditions can be applied.
For example, in the foregoing first embodiment, the touch panel 20 is attached to the touch panel holding plate 70. However, it is possible that, as shown in FIGS. 9A and 9B, instead of the touch panel holding plate 70, the touch panel 20 is attached to a mesh 92 which is stretched between frames 91, and pressed by the roller 80 through the mesh 92. This method is preferable since an angle of bend of the touch panel 20 is small so that a load to the touch panel 20 becomes small.
Further, in the foregoing second embodiment, the case using the touch panel 20 having the structure wherein the lower plastic film 21 and the touch-side plastic film 22 are layered has been described. However, in the case where the sealing panel 50 is omitted as above, the conventional touch panel using a glass substrate instead of the lower plastic film 21 can be used in order to improve strength of the display unit.
Further, the foregoing modification can be applied not only to the first embodiment, but also to the second embodiment. It is hereby possible to realize a more thinner and lighter display unit.
Further, for example, for the touch panel 20, various driving methods can be used, such as resistance film method, capacitance method, optical method, ultrasonic method, and electromagnetic induction method.
Further, for example, regarding a structure of the organic light emitting devices 10R, 10G, and 10B, their layer order can be opposite to that in the foregoing embodiments in such a way that the second electrode 14, the organic layer 13, and the first electrode 12 are layered on the driving substrate 11 in this order from the driving substrate 11, and lights can be extracted from the driving substrate 11 side. In this case, the touch panel 20 is placed on the driving substrate 11 on the side opposite to the organic light emitting devices 10R, 10G, and 10B.
Further, for example, in the foregoing embodiments, the case using the first electrode 12 as an anode and the second electrode 14 as a cathode has been described. However, it is possible that anode and cathode are reversed in such a way that the first electrode 12 is a cathode and the second electrode 14 is an anode. Further, it is possible, along with using the first electrode 12 as a cathode and the second electrode 14 as an anode, the second electrode 14, the organic layer 13, and the first electrode 12 are layered on the driving substrate 11 in this order from the driving substrate 11 side, and the lights are extracted from the driving substrate 11 side.
Further, in the foregoing embodiments, the structures of the organic light emitting devices have been specifically described. However, all layers are not necessarily provided, and other layer can be further provided. For example, it is possible that the first electrode 12 has a two-layer structure wherein a transparent conductive film is layered on the top of a reflection film such as a dielectric multi-layer film or Al. In this case, an end face of the reflection film on the light emitting layer side composes an end of the resonation part, and the transparent conductive film composes a part of the resonation part.
Further, in the foregoing embodiments, the case wherein the second electrode 14 is comprised of the semi-transparent reflection layer has been described. However, it is possible that the second electrode 14 has a structure wherein the semi-transparent reflection layer and a transparent electrode are layered from the first electrode 12 side. A function of this transparent electrode is to lower electric resistance of the semi-transparent reflection layer. This transparent electrode is made of a conductive material having a sufficient translucency to the lights generated in the light emitting layer. As a material to make the transparent electrode, for example, ITO or a compound containing indium, zinc (Zn), and oxygen is preferable, since good conductivity can be obtained by using these materials even if deposition is made at room temperature. A thickness of the transparent electrode can be, for example, 30 nm to 1,000 nm.
Further, in the foregoing embodiments, the case wherein the organic light emitting devices 10R, 10G, and 10B are formed on the driving substrate 11 has been described. However, this invention can be applied to a display wherein other display devices such as an inorganic electroluminescence device is formed on the driving substrate 11, FED (Field Emission Display), or a paper-like display which has been noted lately.
As described above, according to the display unit of the invention or the method of manufacturing the display unit of the invention, since the whole faces of the touch panel and the display panel are directly bonded together with the adhesive layer in between, a void between the touch panel and the display panel can be omitted and a thickness of the display unit can be reduced.
According to the display unit of one aspect of the invention or the method of manufacturing the display unit of one aspect of the invention, since the display panel has the sealing substrate which is placed opposite to the display device side of the substrate, and the whole faces of the substrate and the sealing substrate are bonded together with the adhesive layer in between, strength of the display panel is improved. Therefore, this display unit is extremely suitable as a display unit for mobile devices wherein a touch screen is essential and which require high strength.
According to the display unit of another aspect of the invention or the method of manufacturing the display unit of another aspect of the invention, since the touch panel has a structure wherein two plastic films wherein respective transparent electrodes are formed are layered so that these transparent electrodes are placed opposite to each other, thickness and weight of the display unit is further reduced. In addition, even if the touch panel is such a touch panel with low rigidity, the touch panel is supported by the display panel. Thus, when distortion or bending is generated in the plastic film due to contact with a finger or a pen, such distortion or bending is restrained or recovered by the display panel.
According to the display unit of still another aspect of the invention or the method of manufacturing the display unit of still another aspect of the invention, since the touch panel is provided on the side where the display devices of the substrate are formed, and the display devices are sealed by the touch panel, thickness and weight of the display unit can be further reduced. In addition, since the display devices are surely sealed by the adhesive layer and the touch panel, deterioration can be prevented.
According to the method of manufacturing the display unit of still another aspect of the invention, since when the touch panel and the display panel are bonded together with the adhesive layer in between, one side of the touch panel is applied to the roller, and pressure force is applied by rotational movement of the roller, the touch panel and the display panel can be bonded together without mixing air bubbles into the adhesive layer. Therefore, deterioration of the display devices due to oxygen or moisture of air bubbles can be prevented, and image quality can be improved.
According to the method of manufacturing the display unit of still another aspect of the invention, since when the touch panel is pressed by the roller, the touch panel is previously incurved by setting the face bonded to the adhesive layer to outside, and the touch panel is pressed by the roller from the other face, i.e. the side to which contact by a finger or a pen is made, force is applied in the direction of tension to make the face to which contact by a finger or a pen is made flat. Therefore, in bonding, no distortion or bending is generated in the face to which contact by a finger or a pen is made, and image quality is improved.
Obviously many modifications and variations of the present invention are possible in the light of the above teachings. It is therefore to be understood that within the scope of the appended claims the invention may be practiced otherwise than as specifically described.

Claims (6)

What is claimed is:
1. A method of manufacturing a display unit, comprising:
providing a display panel including (a) a substrate with display devices, the display devices being organic light emitting devices, (b) a protective film in contact with the substrate and the organic light emitting devices, (c) a first adhesive layer on the protective film, and (d) a sealing panel with a sealing substrate directly on both of (i) at least one color filter, and (ii) the first adhesive layer;
forming a second adhesive layer across a surface of the display panel;
attaching a touch panel to a touch panel holding unit, the touch panel configured to enable detection of a touch on a surface thereof;
positioning the touch panel holding unit at an angle relative to the display panel;
positioning one side of the touch panel onto the second adhesive layer on the display panel; and
securing the touch panel onto the second adhesive layer by moving a roller such that the touch panel is pressed against the display panel by pressure force, and moving the touch panel holding unit relative to the display panel in synchronization with the roller and allowing the touch panel to slide off of the touch panel holding unit,
wherein,
the second adhesive layer is between the protective film and the touch panel.
2. The method of manufacturing a display unit according to claim 1, wherein the touch panel is provided on a side of the substrate in which the display devices of the substrate are formed, and the display devices are between the touch panel and the substrate.
3. The method of manufacturing a display unit according to claim 1, wherein the touch panel has a structure in which two plastic films with respective transparent electrodes are layered so that the transparent electrodes are placed opposite to each other.
4. The method of manufacturing a display unit according to claim 1, wherein the sealing substrate is placed opposite to a side of the display devices of the substrate, and whole faces of the substrate and the sealing substrate are bonded together with the first adhesive layer therebetween during the process of forming the display panel.
5. The method of manufacturing a display unit according to claim 4, wherein the touch panel is provided on the sealing substrate on a side opposite to the substrate.
6. The method of manufacturing a display unit according to claim 1, wherein each of the organic light emitting devices has an organic layer including a light emitting layer, and extracts light generated in the light emitting layer from a second electrode side, the light emitting layer being formed between a first electrode and a second electrode.
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US14/299,609 US20140285738A1 (en) 2002-10-01 2014-06-09 Display unit and its manufacturing method
US14/560,114 US9720448B2 (en) 2002-10-01 2014-12-04 Display unit and its manufacturing method
US15/612,718 US10571965B2 (en) 2002-10-01 2017-06-02 Display unit and its manufacturing method
US16/744,501 US10817019B2 (en) 2002-10-01 2020-01-16 Display unit and its manufacturing method
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140004767A1 (en) * 2012-07-02 2014-01-02 Jun NAMKUNG Manufacturing apparatus and method of organic light emitting diode display
US10032833B2 (en) 2012-07-12 2018-07-24 Semiconductor Energy Laboratory Co., Ltd. Display device
US10147742B2 (en) 2009-07-07 2018-12-04 Semiconductor Energy Laboratory Co., Ltd. Display device
US10269883B2 (en) 2008-11-18 2019-04-23 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device method for manufacturing the same, and cellular phone

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7936338B2 (en) * 2002-10-01 2011-05-03 Sony Corporation Display unit and its manufacturing method
TWI272037B (en) * 2005-03-31 2007-01-21 Au Optronics Corp Organic electroluminescent display panel
JP4743038B2 (en) * 2005-08-22 2011-08-10 セイコーエプソン株式会社 Electroluminescence device and manufacturing method thereof
TWI313431B (en) * 2006-04-14 2009-08-11 Ritdisplay Corporatio Transparent touch panel
JP4910780B2 (en) * 2007-03-02 2012-04-04 セイコーエプソン株式会社 Organic electroluminescence device with input function and electronic device
JP5103944B2 (en) * 2007-03-02 2012-12-19 セイコーエプソン株式会社 Organic electroluminescence device with input function and electronic device
KR100873080B1 (en) * 2007-05-10 2008-12-09 삼성모바일디스플레이주식회사 Organic electroluminescent display
KR20090112118A (en) * 2008-04-23 2009-10-28 엘지이노텍 주식회사 Display
TWI400509B (en) * 2008-06-13 2013-07-01 Prime View Int Co Ltd Flexible display module and method of manufacturing the same
US8928597B2 (en) 2008-07-11 2015-01-06 Samsung Display Co., Ltd. Organic light emitting display device
US8629842B2 (en) * 2008-07-11 2014-01-14 Samsung Display Co., Ltd. Organic light emitting display device
US9342176B2 (en) 2008-07-21 2016-05-17 Samsung Display Co., Ltd. Organic light emitting display device
JP2010032938A (en) 2008-07-31 2010-02-12 Hitachi Displays Ltd Liquid crystal display
KR20100024710A (en) * 2008-08-26 2010-03-08 삼성모바일디스플레이주식회사 Organic light emitting diode display
EP2178133B1 (en) * 2008-10-16 2019-09-18 Semiconductor Energy Laboratory Co., Ltd. Flexible Light-Emitting Device, Electronic Device, and Method for Manufacturing Flexible-Light Emitting Device
KR101634791B1 (en) 2008-11-28 2016-06-30 삼성디스플레이 주식회사 Touch sensible organic light emitting diode display
KR101048980B1 (en) 2009-01-16 2011-07-12 삼성모바일디스플레이주식회사 Touch screen panel and its manufacturing method
CN101848610A (en) * 2009-03-27 2010-09-29 深圳富泰宏精密工业有限公司 Shell and manufacturing method thereof
TWI391886B (en) * 2009-06-12 2013-04-01 Au Optronics Corp Flexible touch display apparatus
KR20110037337A (en) * 2009-10-06 2011-04-13 엘지디스플레이 주식회사 Organic light emitting display device and manufacturing method thereof
KR101695019B1 (en) * 2009-12-18 2017-01-11 엘지디스플레이 주식회사 Organic Light Emitting Device and Method For The Same
KR101107173B1 (en) * 2010-02-11 2012-01-25 삼성모바일디스플레이주식회사 Organic light emitting display device and manufacturing method thereof
KR101756656B1 (en) * 2010-06-25 2017-07-11 엘지디스플레이 주식회사 Organic light emitting diode display device including touch panel
JP5485834B2 (en) * 2010-09-01 2014-05-07 スリーエム イノベイティブ プロパティズ カンパニー Image display device manufacturing method and image display device manufacturing apparatus
JP5652100B2 (en) * 2010-10-05 2015-01-14 ソニー株式会社 Display panel, display device, lighting panel and lighting device, and display panel and lighting panel manufacturing method
KR101320384B1 (en) 2011-06-30 2013-10-23 삼성디스플레이 주식회사 Flexible display panel and the display apparatus comprising the flexible display panel
KR101919107B1 (en) 2012-05-08 2018-11-16 삼성디스플레이 주식회사 Display device
GB2502600B8 (en) 2012-05-31 2015-01-07 Improvements in touch sensitive displays
GB2502602B (en) * 2012-05-31 2015-06-03 Zytronic Displays Ltd Multi-touch sensing panel production method
US20140009429A1 (en) * 2012-07-03 2014-01-09 Chimei Innolux Corporation Method of producing capacitive coplanar touch panel devices with laser ablation
US20140062916A1 (en) * 2012-08-28 2014-03-06 Lg Display Co., Ltd. Touch panel and method of manufacturing the same and display device using the same
KR101930383B1 (en) * 2012-10-31 2019-03-11 엘지디스플레이 주식회사 Organic Light Emitting Device and Method of manufacturing the same
KR101453880B1 (en) 2012-11-29 2014-10-22 삼성디스플레이 주식회사 Organic light emitting display apparatus and the method for manufacturing the same
GB2511780B (en) * 2013-03-12 2017-04-19 Tcs John Huxley Europe Ltd Gaming table
TWI497386B (en) * 2013-03-22 2015-08-21 Innolux Corp Display apparatus with touch sensor and method for manufacturing the same
KR20140123735A (en) * 2013-04-15 2014-10-23 삼성디스플레이 주식회사 Adhesive having adhesive capsule and organic light emitting display device comprising adhesive layer formed by the adhesive
KR102150711B1 (en) * 2013-05-28 2020-09-02 삼성디스플레이 주식회사 Flexible display apparatus
JP6253923B2 (en) * 2013-08-30 2017-12-27 株式会社ジャパンディスプレイ Organic electroluminescence device with built-in touch sensor
CN103713778B (en) * 2013-12-27 2016-10-05 合肥京东方光电科技有限公司 Color membrane substrates and preparation method, light-controlled indicator for light-controlled indicator
KR102235703B1 (en) 2014-02-12 2021-04-05 삼성디스플레이 주식회사 Display device and method of manufacturing a display device
KR102352284B1 (en) * 2015-02-02 2022-01-18 삼성디스플레이 주식회사 Rollable display device
USD850443S1 (en) 2015-12-22 2019-06-04 Lenovo (Beijing) Co., Ltd. Flexible electronic device
US10466469B1 (en) * 2016-03-28 2019-11-05 Amazon Technologies, Inc. Display device with cover structure
USD841612S1 (en) * 2016-03-31 2019-02-26 Lenovo (Beijing) Co., Ltd. Flexible electronic device
KR102108566B1 (en) * 2017-09-25 2020-05-08 주식회사 엘지화학 Encapsulation film
TWI643116B (en) * 2017-11-10 2018-12-01 智晶光電股份有限公司 Touch display device and method using display peripheral electrode and display electrode
CN107994057B (en) * 2017-11-20 2021-09-28 武汉华星光电半导体显示技术有限公司 Manufacturing method of touch sensing layer, display screen and display
US10969877B2 (en) 2018-05-08 2021-04-06 Artilux, Inc. Display apparatus
CN109002236B (en) * 2018-07-20 2022-08-23 京东方科技集团股份有限公司 Flexible touch screen, manufacturing method thereof and display device
CN110289372A (en) * 2019-07-02 2019-09-27 京东方科技集团股份有限公司 A packaging method for a display panel, a display device, and an organic light-emitting component
CN110481045B (en) * 2019-09-16 2024-11-22 江苏铁锚玻璃股份有限公司 Weight-reduced transparent display touch screen bonding structure and manufacturing method thereof
CN111710797A (en) * 2020-06-22 2020-09-25 云谷（固安）科技有限公司 Display panel and display device
CN118175896A (en) * 2020-07-31 2024-06-11 群创光电股份有限公司 Electronic device
CN112510167B (en) * 2020-12-18 2023-08-15 重庆莱宝科技有限公司 Display panel and preparation method thereof

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744562A (en) * 1950-06-14 1956-05-08 Pioneer Mounting & Finishing C Apparatus for assembling advertising displays
US4561929A (en) * 1984-02-06 1985-12-31 Karl Lenhardt Apparatus for applying an adhesive strip of plastic to a glass pane
US4669314A (en) * 1985-10-31 1987-06-02 General Electric Company Variable focusing in ultrasound imaging using non-uniform sampling
US5548306A (en) 1994-04-28 1996-08-20 At&T Global Information Solutions Company Visible and touchable touch screen shield
US5667624A (en) * 1994-09-19 1997-09-16 Ookubo Co., Ltd. Polarization plate gluing apparatus
US6198217B1 (en) 1997-05-12 2001-03-06 Matsushita Electric Industrial Co., Ltd. Organic electroluminescent device having a protective covering comprising organic and inorganic layers
US6221194B1 (en) * 1998-03-30 2001-04-24 Denso Corporation Manufacturing method of electroluminescent display panel
US20010053648A1 (en) * 2000-03-31 2001-12-20 Keiichi Furukawa Method and apparatus for producing a display panel, method for adhering an adhesive sheet and method for adhering plates
US6411344B2 (en) 1998-06-18 2002-06-25 Kaneka Corporation Transparent touch panel and liquid crystal display device equipped with transparent touch panel
US6424094B1 (en) 2001-05-15 2002-07-23 Eastman Kodak Company Organic electroluminescent display with integrated resistive touch screen
US20020130849A1 (en) * 2001-03-16 2002-09-19 Young-Soo Ahn Touch panel with polarizer, flat panel display with the touch panel and manufacturing method thereof
US6559595B1 (en) * 1996-05-22 2003-05-06 Seiko Epson Corporation Active matrix liquid crystal display device and its manufacturing method
US6693690B2 (en) 2001-05-07 2004-02-17 Nitto Denko Corporation Reflective liquid-crystal display device
US6771327B2 (en) * 2000-09-18 2004-08-03 Citizen Watch Co., Ltd. Liquid crystal display device with an input panel
US6781642B2 (en) 1999-01-18 2004-08-24 Matsushita Electric Industrial Co., Ltd. Transparent touch panel and electronic apparatus using the same
US6814642B2 (en) * 2001-04-04 2004-11-09 Eastman Kodak Company Touch screen display and method of manufacture
US6879319B2 (en) 2002-10-25 2005-04-12 Eastman Kodak Company Integrated OLED display and touch screen
US6914640B2 (en) * 2001-12-27 2005-07-05 Lg. Philips Lcd Co., Ltd. Touch panel liquid crystal display device and method of fabricating the same
US7034457B2 (en) 2003-02-24 2006-04-25 Sony Corporation Display unit and method of manufacturing the same
US7042444B2 (en) 2003-01-17 2006-05-09 Eastman Kodak Company OLED display and touch screen
US7071927B2 (en) 1999-11-17 2006-07-04 L-3 Communications Corporation Resistive touch panel using removable, tensioned top layer

Family Cites Families (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305745A (en) * 1961-12-22 1967-02-21 Dow Chemical Co Electroluminescent structure with improved protective transparent film
US4958148A (en) * 1985-03-22 1990-09-18 Elmwood Sensors, Inc. Contrast enhancing transparent touch panel device
JPH0762821B2 (en) * 1986-05-30 1995-07-05 株式会社日立製作所 Touch panel input device
US4931782A (en) * 1988-06-24 1990-06-05 E. I. Du Pont De Nemours And Company Touch screen overlay with improved conductor durability
JP3127195B2 (en) * 1994-12-06 2001-01-22 シャープ株式会社 Light emitting device and method of manufacturing the same
JPH10153786A (en) * 1996-11-21 1998-06-09 Ricoh Co Ltd Double-seal structure liquid crystal display panel, and liquid crystal display device with input touch panel
JPH1165764A (en) * 1997-08-26 1999-03-09 Matsushita Electric Ind Co Ltd Liquid crystal display element with touch panel
US6310612B1 (en) * 1997-12-24 2001-10-30 Bridgestone Corporation Display unit integral with touch panel bonded through an adhesive composition or an adhesive film and production method thereof
US6259491B1 (en) * 1998-02-06 2001-07-10 Motorola, Inc. Double sided laminated liquid crystal display touchscreen and method of making same for use in a wireless communication device
US6556189B1 (en) * 1998-04-24 2003-04-29 Nissha Printing Co., Ltd. Touch panel device
TW439308B (en) * 1998-12-16 2001-06-07 Battelle Memorial Institute Environmental barrier material for organic light emitting device and method of making
JP3594826B2 (en) * 1999-02-09 2004-12-02 パイオニア株式会社 Nitride semiconductor light emitting device and method of manufacturing the same
US6355125B1 (en) * 1999-03-26 2002-03-12 Agfa-Gevaert Method for making an electric or electronic module comprising a glass laminate
US6331928B1 (en) * 1999-05-27 2001-12-18 Storage Technology Corporation ESD-protected interface panel and associated methods
WO2000079605A1 (en) * 1999-06-23 2000-12-28 Citizen Electronics Co., Ltd. Light emitting diode
JP2001043980A (en) * 1999-07-29 2001-02-16 Sony Corp Organic electroluminescence element and display device
TW522453B (en) * 1999-09-17 2003-03-01 Semiconductor Energy Lab Display device
US6641933B1 (en) * 1999-09-24 2003-11-04 Semiconductor Energy Laboratory Co., Ltd. Light-emitting EL display device
JP3409764B2 (en) * 1999-12-28 2003-05-26 日本電気株式会社 Manufacturing method of organic EL display panel
US7579203B2 (en) * 2000-04-25 2009-08-25 Semiconductor Energy Laboratory Co., Ltd. Light emitting device
JP2001343908A (en) * 2000-05-31 2001-12-14 Nitto Denko Corp Touch type EL display device and input detection method
US20020043943A1 (en) * 2000-10-10 2002-04-18 Menzer Randy L. LED array primary display light sources employing dynamically switchable bypass circuitry
EP1326161B1 (en) * 2000-10-13 2006-12-13 Denso Corporation Touch panel for an automobile and method for producing the same
JP2002189565A (en) 2000-10-13 2002-07-05 Denso Corp Touch panel and display device
KR100663454B1 (en) * 2000-10-30 2007-01-02 삼성전자주식회사 Reporting method of main information block transmission location in mobile communication system
JP3669333B2 (en) * 2001-02-06 2005-07-06 ソニー株式会社 Organic electroluminescent device and display device
KR200234651Y1 (en) 2001-03-16 2001-10-08 주식회사 에이터치 Flat panel display with touch panel
US6819316B2 (en) * 2001-04-17 2004-11-16 3M Innovative Properties Company Flexible capacitive touch sensor
US7253032B2 (en) * 2001-04-20 2007-08-07 Semiconductor Energy Laboratory Co., Ltd. Method of flattening a crystallized semiconductor film surface by using a plate
JP4801278B2 (en) * 2001-04-23 2011-10-26 株式会社半導体エネルギー研究所 Light emitting device and manufacturing method thereof
WO2002091319A2 (en) * 2001-05-04 2002-11-14 Igt Light emitting interface displays for a gaming machine
US7106307B2 (en) * 2001-05-24 2006-09-12 Eastman Kodak Company Touch screen for use with an OLED display
JP4267266B2 (en) * 2001-07-10 2009-05-27 株式会社半導体エネルギー研究所 Method for manufacturing semiconductor device
US6872766B2 (en) * 2001-10-03 2005-03-29 Eastman Kodak Company Ultraviolet light filter element
US6623608B2 (en) * 2002-02-08 2003-09-23 Eastman Kodak Company Method for manufacturing an integrated display device including an OLED display and a touch screen
US6846579B2 (en) * 2002-02-15 2005-01-25 Eastman Kodak Company Multilayer with radiation absorber and touch screen
US6835950B2 (en) * 2002-04-12 2004-12-28 Universal Display Corporation Organic electronic devices with pressure sensitive adhesive layer
US7268486B2 (en) * 2002-04-15 2007-09-11 Schott Ag Hermetic encapsulation of organic, electro-optical elements
US7936338B2 (en) * 2002-10-01 2011-05-03 Sony Corporation Display unit and its manufacturing method
US20040069985A1 (en) * 2002-10-15 2004-04-15 Eastman Kodak Company Oled display with circular polarizer
KR100556086B1 (en) * 2003-11-15 2006-03-07 한국전자통신연구원 Encapsulated organic light emitting display panel and manufacturing method thereof
JP2008146904A (en) * 2006-12-07 2008-06-26 Sony Corp Organic electroluminescent element and display device

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744562A (en) * 1950-06-14 1956-05-08 Pioneer Mounting & Finishing C Apparatus for assembling advertising displays
US4561929A (en) * 1984-02-06 1985-12-31 Karl Lenhardt Apparatus for applying an adhesive strip of plastic to a glass pane
US4669314A (en) * 1985-10-31 1987-06-02 General Electric Company Variable focusing in ultrasound imaging using non-uniform sampling
US5548306A (en) 1994-04-28 1996-08-20 At&T Global Information Solutions Company Visible and touchable touch screen shield
US5667624A (en) * 1994-09-19 1997-09-16 Ookubo Co., Ltd. Polarization plate gluing apparatus
US6559595B1 (en) * 1996-05-22 2003-05-06 Seiko Epson Corporation Active matrix liquid crystal display device and its manufacturing method
US6198217B1 (en) 1997-05-12 2001-03-06 Matsushita Electric Industrial Co., Ltd. Organic electroluminescent device having a protective covering comprising organic and inorganic layers
US6221194B1 (en) * 1998-03-30 2001-04-24 Denso Corporation Manufacturing method of electroluminescent display panel
US6411344B2 (en) 1998-06-18 2002-06-25 Kaneka Corporation Transparent touch panel and liquid crystal display device equipped with transparent touch panel
US6781642B2 (en) 1999-01-18 2004-08-24 Matsushita Electric Industrial Co., Ltd. Transparent touch panel and electronic apparatus using the same
US7071927B2 (en) 1999-11-17 2006-07-04 L-3 Communications Corporation Resistive touch panel using removable, tensioned top layer
US20010053648A1 (en) * 2000-03-31 2001-12-20 Keiichi Furukawa Method and apparatus for producing a display panel, method for adhering an adhesive sheet and method for adhering plates
US6771327B2 (en) * 2000-09-18 2004-08-03 Citizen Watch Co., Ltd. Liquid crystal display device with an input panel
US20020130849A1 (en) * 2001-03-16 2002-09-19 Young-Soo Ahn Touch panel with polarizer, flat panel display with the touch panel and manufacturing method thereof
US6707450B2 (en) 2001-03-16 2004-03-16 Atouch Co., Ltd. Touch panel with polarizer, flat panel display with the touch panel and manufacturing method thereof
US6814642B2 (en) * 2001-04-04 2004-11-09 Eastman Kodak Company Touch screen display and method of manufacture
US6693690B2 (en) 2001-05-07 2004-02-17 Nitto Denko Corporation Reflective liquid-crystal display device
US6424094B1 (en) 2001-05-15 2002-07-23 Eastman Kodak Company Organic electroluminescent display with integrated resistive touch screen
US6914640B2 (en) * 2001-12-27 2005-07-05 Lg. Philips Lcd Co., Ltd. Touch panel liquid crystal display device and method of fabricating the same
US6879319B2 (en) 2002-10-25 2005-04-12 Eastman Kodak Company Integrated OLED display and touch screen
US7042444B2 (en) 2003-01-17 2006-05-09 Eastman Kodak Company OLED display and touch screen
US7034457B2 (en) 2003-02-24 2006-04-25 Sony Corporation Display unit and method of manufacturing the same

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10600853B2 (en) 2008-11-18 2020-03-24 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device, method for manufacturing the same, and cellular phone
US12200983B2 (en) 2008-11-18 2025-01-14 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device, method for manufacturing the same, and cellular phone
US11818925B2 (en) 2008-11-18 2023-11-14 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device, method for manufacturing the same, and cellular phone
US11289558B2 (en) 2008-11-18 2022-03-29 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device, method for manufacturing the same, and cellular phone
US10269883B2 (en) 2008-11-18 2019-04-23 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device method for manufacturing the same, and cellular phone
US10896941B2 (en) 2008-11-18 2021-01-19 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device, method for manufacturing the same, and cellular phone
US10361221B2 (en) 2009-07-07 2019-07-23 Semiconductor Energy Laboratory Co., Ltd. Display device
US10147742B2 (en) 2009-07-07 2018-12-04 Semiconductor Energy Laboratory Co., Ltd. Display device
US10411038B2 (en) 2009-07-07 2019-09-10 Semiconductor Energy Laboratory Co., Ltd. Display device
US10692891B2 (en) 2009-07-07 2020-06-23 Semiconductor Energy Laboratory Co., Ltd. Display device
US12100708B2 (en) 2009-07-07 2024-09-24 Semiconductor Energy Laboratory Co., Ltd. Display device
US11824060B2 (en) 2009-07-07 2023-11-21 Semiconductor Energy Laboratory Co., Ltd. Display device
US10985186B1 (en) 2009-07-07 2021-04-20 Semiconductor Energy Laboratory Co., Ltd. Display device
US11018159B2 (en) 2009-07-07 2021-05-25 Semiconductor Energy Laboratory Co., Ltd. Display device
US11476280B2 (en) 2009-07-07 2022-10-18 Semiconductor Energy Laboratory Co., Ltd. Display device
US20140004767A1 (en) * 2012-07-02 2014-01-02 Jun NAMKUNG Manufacturing apparatus and method of organic light emitting diode display
US8926778B2 (en) * 2012-07-02 2015-01-06 Samsung Display Co., Ltd. Manufacturing apparatus and method of organic light emitting diode display
US11088222B2 (en) 2012-07-12 2021-08-10 Semiconductor Energy Laboratory Co., Ltd. Display device comprising a thin glass material layer
US10032833B2 (en) 2012-07-12 2018-07-24 Semiconductor Energy Laboratory Co., Ltd. Display device
US10516007B2 (en) 2012-07-12 2019-12-24 Semiconductor Energy Laboratory Co., Ltd. Display device and method for manufacturing display device
US11844260B2 (en) 2012-07-12 2023-12-12 Semiconductor Energy Laboratory Co., Ltd. Display device comprising thin glass layer
US10818737B2 (en) 2012-07-12 2020-10-27 Semiconductor Energy Laboratory Co., Ltd. Display device comprising a light-emitting element
US12167665B2 (en) 2012-07-12 2024-12-10 Semiconductor Energy Laboratory Co., Ltd. Display device and method for manufacturing display device

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US7936338B2 (en) 2011-05-03

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